Two-stroke cycle-motor.



A. PEUGEOT, T. HUBER & H. DE LOSTALOT..

TWO-STROKE CYCLE MOTOR. APPLIOATIQN FILED PEBJO, 1908.

961,315, Patented June 14,1910;

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A.'PEUGEO' I', T. HUBER & H. DE LOSTALOT. TWO-STROKE CYCLE MOTOR.APPLICATION FILED PEBJO, 1908.

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l TWO-STROKE CYCLE-MOTOR.

Specification of Letters Patent. Patented J 1111;; 14, 1910.

Application filed February 10, 1908. Serial No. 415,144.

To all whom it may concern:

Be it known that we, ABMAND PEUGEOT,

TONY HUBER, and HENRI DE LOSTALOT, citizens of the Republic of France,residing at 56 Rue du Vieux Pont de Sevres, Billancourt, Seine, in theRepublic of France, have invented certain new and useful Improvements inTwo-Stroke Cycle-Motors, of which the following is a specification.

This invention relates to improvements in, two stroke cycle motors ofthe kind in which the cylinder is closed by a sliding shutter whichallows the connecting rod to be articulated directly to the piston whileutilizing the capacity of the cylinder between the piston and thesliding shutter as a compression chamber forthe fresh gas.

One of the improvements consists in arranging on the supports of thesliding closure, interposed between the cylinder and casing two fixedmetal bodies which reduce the capacity of the chamber formed between thepiston at its bottom position and the said slide. By this means, abetter initial com ression of the fresh gases admitted is obtainedwithout supplementary mechanism,

-- edgeof the which insures a more rapid and complete evacuation of theburned gases and at the same time an increase in the volume of fresh gasadmitted per stroke.

-Another improvement consists in insuring the preliminary admission ofthe fresh gases directly into the hollow piston, which is done by meansof an inclined passage which conducts the gases through aperturesarranged in series in the lateral wall of the tubular prolongation ofthe piston. By preventing the admission of the gas at the lower iston,the sliding closure can be arranged lmmediately below the piston when inits lowest position. Consequently the capacity of the preliminarycompression chamber is further reduced and waste spaces are avoided.Moreover, the; arrangement of this passage is sucn that the fresh gasesare directly projected under the upper face of.

the piston, and energetically cool the said piston and render it quitepracticable to use aluminium or analogous metal-for the piston.

By these improvements the efiiciency of the motor is appreciablyincreased. The motor can be further simplifiedby substituting for therotary joint, which makes a tight passage for the rod through thesliding closure, a plane, sliding joint in which the parts liable to beworn are easily replaceable.

The annexed drawing illustrates the invention, in which Figure 1 is asection of the entire motor. Fig. 2 shows the piston, partly in sectionand partly in elevation; Fig. 3 is a section of the rotary joint, on theline A A of Fig. 5. Fig. 4c is a sectionof the rotary joint on the lineB B of Fig. 5. Fig. 5 is a "plan 'view'of the rotary joint. Fig. 6 is asection of the plane, sliding joint on the line C C of Fig.

Fig. 7 is a plan'of the plane, sliding joint. Figs. 8 and 9 are sectionsof the supporting plate of the sliding closure, on the lines D and E Eof Fig. 10 respectively.

Fig. 10 is a plan of the supporting plate of I the sliding closure.

The supporting plates p and 9 form a kind of flat box in which thesliding plate 3 is movable, which is thus perfectly guided,

the said plates each have a rectangular slot 0 which allows of themovements of the rod B. On the plate p, cast integral there with, twometallic bodies 1' are so arranged as to partly fill the interior of thecasing A when the piston A is in its lower position. On the plate f isriveted the casing s which ,incloses the boss t in which oscillates -therod B. The plate ';0 is thus situated immediately below the lower edgeof the piston when in its lowest position, leaving between the twoa'very small clearance. The supply of gases entering at 'v is controlledby an automatically opening admission valve u; and is divided passingthrough two passages m and y, one of which opens obliquely 1nto I thecylinder. The piston isprovided with a projection Z and with ribs 2,which greatly 'facilitatethe cooling thereof. 'The piston wall A hasapertures 1 so arranged that at the proper moment they arrive oppositethe orifice of the passage y in the cylinder. In the example shown inthe drawing, the cylinder is provided with a double casing 2 for thecirculation of water for cooling. The action is the same as with theknown construction but the results sought for are obtained in a morecomplete manner. Owing to the reduction of the preliminary com ressionchamber, owin to the provision o the bodies 1* and from t e'closearrangement of the sliding closure relatively to the lower. edge of thepiston in its lowest position a llt better initial compression isobtained and consequently a better evacuation of the burned gases, and alarger volume of gas admitted per stroke. Moreover the method of"introduction of the fresh gas into the piston insures the energeticcooling of the same and allows of the entirely practical utilization ofpistons of aluminium or metal having analogous properties. Finally, thelightness and simplicity of the motor may be increased as has beenstated, by using instead of the rotary joint shown in Figs. 1, 3, 4, 5,the plane, sliding joint shown in Figs. 6 and 7.

With this device the connecting rod of rectangular cross-section usedbears against both heads of V-shaped surface of two small pieces 4:easily removable and replaceable in case of wear, for which purpose itis sufficient to nnscrew and remove the bolts and screws 5 which holdthem. The rod being constantly in contact with these pieces during itsmovement, the joint, though, of simple construction is very tight.Instead of the flat joint, the cylindrical joint t moving in thecylindrical bearing 8 can be used.

Having now described our invention, what ;we claim as new and desire tosecure by Letters Patent is:

In a motor of the character described, the combination with a verticalcylinder, of an apertured piston adapted to divide the same into acompression chamber and an explosion chamber, there being a horizontaladmission port leading to the explosion cham' her and an upwardlyinclined port leading to, and serving as an inlet and outlet for, thecompression chamber, said inclined port being adapted to direct gasesentering the compression chamber through the apertures in the pistonagainst the piston on the suc tion stroke of the latter, means wherebysaid ports communicate and are adapted to transfer gases from thecompression chamber to the explosion chamber, a pair of super osedsupporting plates at the lower end 0 said cylinder, a pair of fillerblocks mounted on the upper supporting plate and projecting into thecylinder, a plate mounted to slide between said supporting plates, acasing fixed to said sliding plate, a boss rotatable in said casing,'anda connecting rod pivoted to the piston and passing through the boss.

In testimony whereof we have aifixed our signatures in presence of twowitnesses.

ARMAND PEUGEOT. TONY HUBER. HENRI DE LOSTALQT.

Witnesses:

H. G. Coxn, An'romn LAvoIs.

